CN U-1-f

Specifications
Configuration:;
• Whyte	4-8-2
• UIC	2′D1′h2
Gauge	4 ft 8 1⁄2 in (1,435 mm)
Leading dia.	34 in (0.864 m)
Driver dia.	73 in (1.854 m)
Trailing dia.	43 in (1.092 m)
Wheelbase	Coupled: 19 ft 0 in (5.79 m); Loco: 42 ft 2 in (12.85 m); Loco & tender: 80 ft 10 3⁄4 in (24.66 m);
Length	90 ft 0 1⁄8 in (27.44 m)
Width	10 ft 9 in (3.28 m)
Height	15 ft 4 1⁄2 in (4.69 m)
Adhesive weight	236,950 lb (107.48 t)
Loco weight	355,700 lb (161.3 t)
Tender weight	281,840 lb (127.84 t)
Fuel type	Originally coal, later oil
Tender cap.	Coal: 18 tons coal, 11,700 imp gal (53 m3) water; Oil: 5,000 imp gal (23 m3) oil, 11,000 imp gal (50 m3) water;
Firebox:; • Firegrate area	70.2 sq ft (6.52 m2)
Boiler pressure	260 lbf/in2 (1.79 MPa)
Heating surface	3,584 sq ft (333.0 m2)
• Tubes and flues	3,198 sq ft (297.1 m2)
• Firebox	386 square feet (35.9 m2)
Superheater:;
• Type	Schmidt type E
• Heating area	1,570 sq ft (146 m2)
Cylinders	Two, outside
Cylinder size	24 in × 30 in (610 mm × 762 mm)
Valve gear	Walschaerts
Train heating	Steam heat

Type and origin
Power type	Steam
Builder	Montreal Locomotive Works
Order number	Q-401
Serial number	72757–72776
Build date	October 1944 to January 1945
Total produced	20

Canadian National U-1-f
	CN 6077, on display in Capreol, Ontario
Type and origin
Power type	Steam
Builder	Montreal Locomotive Works
Order number	Q-401
Serial number	72757–72776
Build date	October 1944 to January 1945
Total produced	20
Specifications
Configuration:;
• Whyte	4-8-2
• UIC	2′D1′h2
Gauge	4 ft 8 1⁄2 in (1,435 mm)
Leading dia.	34 in (0.864 m)
Driver dia.	73 in (1.854 m)
Trailing dia.	43 in (1.092 m)
Wheelbase	Coupled: 19 ft 0 in (5.79 m); Loco: 42 ft 2 in (12.85 m); Loco & tender: 80 ft 10 3⁄4 in (24.66 m);
Length	90 ft 0 1⁄8 in (27.44 m)
Width	10 ft 9 in (3.28 m)
Height	15 ft 4 1⁄2 in (4.69 m)
Adhesive weight	236,950 lb (107.48 t)
Loco weight	355,700 lb (161.3 t)
Tender weight	281,840 lb (127.84 t)
Fuel type	Originally coal, later oil
Tender cap.	Coal: 18 tons coal, 11,700 imp gal (53 m3) water; Oil: 5,000 imp gal (23 m3) oil, 11,000 imp gal (50 m3) water;
Firebox:; • Firegrate area	70.2 sq ft (6.52 m2)
Boiler pressure	260 lbf/in2 (1.79 MPa)
Heating surface	3,584 sq ft (333.0 m2)
• Tubes and flues	3,198 sq ft (297.1 m2)
• Firebox	386 square feet (35.9 m2)
Superheater:;
• Type	Schmidt type E
• Heating area	1,570 sq ft (146 m2)
Cylinders	Two, outside
Cylinder size	24 in × 30 in (610 mm × 762 mm)
Valve gear	Walschaerts
Train heating	Steam heat
Performance figures
Tractive effort	52% (52,315 lbf or 232.7 kN)
Factor of adh.	4.5
Career
Operators	Canadian National Railways
Class	U-1-f
Numbers	6060–6079
Retired	1960
Preserved	Three: 6060, 6069, 6077
Disposition	Three preserved, remainder scrapped.

Canadian National Railways U-1-f class locomotives were a class of twenty 4-8-2 or Mountain type locomotives built by Montreal Locomotive Works in 1944. They were numbered 6060–6079 by CN and nicknamed "Bullet Nose Bettys" due to their distinctive cone-shape smokebox door cover.

Construction history

The order for these engines came during World War II when steel was of extreme value. The mountain type locomotive was a step down in size from the much more prevalent Northern Type (4-8-4). As a result of the step down in size the mountain type had less power but more speed and served well as a general purpose workhorse.

Modifications

Half the class had been converted to oil-firing by October 1944. This resulted in the 18-ton coal/11,700-imperial-gallon (53 m³) tender being exchanged for a 5,000-imperial-gallon (23 m³) oil/11,000-imperial-gallon (50 m³) water tender. In later years several locomotives lost the distinctive cone-shaped smokebox door cover.

Preservation

Of the twenty locomotives that were built, only three remain in existence: 6060 owned by the Rocky Mountain Rail Society at the Alberta Prairie Railway, Stettler, Alberta; 6069 at Sarnia, Ontario; and 6077 at the Northern Ontario Railroad Museum, at Capreol, Ontario.

6060's restoration and run to Expo 86

In 1985 through to early 1986, Harry Home led efforts to restore CN 6060 and run it to Expo 86 in Vancouver. The 6060 was rebuilt in Jasper, Alberta, and was run under its own power to Vancouver for the "Cavalcade of Steam", an event which celebrated operational steam locomotives from around the world. 6060 arrived in Vancouver on the second-to-last day of the steam exhibit, and was welcomed by an extremely large crowd of people, happy to see the success of the restoration.

References

"Canadian National Railways U-1-f locomotive diagram". CN Lines Special Interest Group. Retrieved 17 May 2018.

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